Largest Database Data Mined / Analyzed Poll

What was the largest database or dataset you data-mined / analyzed?
[296 votes total]

less than 1 MB (14)

5%

1.1 to 10 MB (19)

6%

11 to 100 MB (25)

8%

101 MB to 1 GB (36)

12%

1.1 to 10 GB (69)

23%

11 to 100 GB (37)

13%

101 GB to 1 Terabyte (TB) (42)

14%

1.1 to 10 TB (29)

10%

11 to 100 TB (7)

2%

101 TB to 1 Petabyte (6)

2%

over 1 Petabyte (12)

4%

We can estimate the median answer as 8 - 10 GB (upper end of 1-10 GB range). Also, we note that 32% reported analyzing databases over 100 GB,
and 18% - over 1 Terabyte. New in this poll was a petabyte (1,000,000 GB) range and 12 people had worked with such humongous databases.

In comparison, a similar 2009 poll,
What was the largest database or dataset you data-mined?,
had the median answer in slighly larger 10-20 GB range (probably because fewer people participated).
However, in 2009 only
20% had experience working with over over 100 GB databases, and
only 10% had experience working with over 1 Terabyte databases.

Here is a breakdown of responses by region. Note that Asia and Australia/New Zealand have a higher proportion of terabyte/petabyte data miners than the US and Europe.